#!/usr/bin/python2.5

# Copyright 2009 Ferdjaoui Sahid.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


class LazyUser (object):
  def __get__ (self, request, obj_type=None):
    if not hasattr (request, '_cached_user'):
      from common import api
      request._cached_user = api.user_get_or_create (request.facebook.uid)
    return request._cached_user

class AuthenticationMiddleware (object):
  def process_request (self, request):
    request.__class__.user = LazyUser ()
